Tornado Cohesion

I will ask a supplementary question: do tornado's always spin the same way?

Hurricanes in the Northern part always spin counter clockwise,

but the size of a hurricane is a lot bigger than a tornado.

I have seen hurricanes with tornadoes inside, and these areas are really devastating. After 5 years you can still see the parts of forests, where the trees were cracked in half here on the islands.

Hurricanes are born over warm waters, when cloud movements due to low barometric pressures combine with water vapor from below, out of vaporisation of the sea water.

I think the people just put their mobile homes on dangerous spots. But who can predict were the tornado strikes?

Tornadoes are formed in areas of wide open flat ground where wind speeds can quickly build up. Unfortunately these are also areas which are popular for developers to build low-cost housing because of the minimal levelling and backfilling they need to carry out before construction. Because of this, mobile homes, which are normally the lowest cost homes sold to low income communities tend to be located in such areas, and as a result they tend to be in the way of tornadoes.

Of course, considering that tornadoes require high temperatures to create the powerful wind currents that form them and that mobile homes are normally made of metal, it is also not inconceivable that the hot metal from the trailers induce the strong wind currents that precede the formation of a tornado. Add to that the wide open surroundings that are normally found around trailer parks, and the theory that mobile homes can attract tornadoes becomes plausible, except that instead of attracting them they actually induce environmental conditions that form them.

Hurricane spin direction is due to the coriolis force. Hurricanes north of the equator will always spin counter clockwise and south of the equator will always spin clockwise.

I don't know the rules on when you call it a hurricane, when a cyclone and when a typhoon.

I know very little about how a tornado forms. I have helped clean up the mess several times but as far as I know even the experts have a lot to learn. But, one of the major theories seems to include rolling air aloft along a front. When there is a bend in the front (TV weather man uses term "bow echo") the rolling tube of air has the front try to bend the tube too much and it gets a kink in it. Well, the roll doesn't just stop, so at the kink (bow echo) the tubular roll will typically go somewhere. This "somewhere" is often down. Thus, the tornado is (at least sometimes) a "kink" in a "rotating tube of air" that is caused by the friction of one air mass riding over another air mass along a weather front.

Now, does a tornado always roate the same way? My best guess is "no", but from watching the weather man break into TV shows with his tornado warning I have noticed that they seem to issue a lot of warnings on the bow echo at the south end of a long tube. Thus, I suspect that they normally do rotate the same way. My final answer is "I don't know".

Now, if you think that trailer parks attract tornados I'm afraid you are asking for trouble from this crowd (at least the registered CR4 members). Most of us have noticed that F0 and F1 tornados will tear apart trailer parks but only flip garbage cans in a neighborhood of well build houses. Thus, the trailer parks work well at attracting Urban Myths but they do not attract tornados.

Bruce

Has a scientific study been performed, or have the claims been dismissed out of hand as rumour or folklore?Sure, mobile homes are more fragile than regular houses, but the F0 or F1's are not the only type that seem to favor mobile homes.I know that channel 4( old analog tv channel) picks up a lot of static and snow when a tornado approaches (NOT I.F. AMPLIFIER NOISE), so tornadoes appear to produce some rf at certain frequencies.This would indicate some type of electrical activity, and where there is electricity, there is usually a magnetic field.Parallel steel beams would tend to concentrate and bend the Earth's natural magnetic field to align in a particular direction.Nearby steel structures could do likewise, and actually have a reinforcing effect on each other,like antenna elements.

Perhaps there is more at work here than is evident at first glance.

Still, the question remains about cohesion of the funnel cloud.What holds it together against the large centrifugal forces at work here?

Air pressure. The eye of a tornado is at extremely low pressure while the surrounding air is at much higher pressure. That's why buildings literally explode when hit by one.

Could something similar be going on with galaxies, that prevents them from disintegrating? Could the outward velocity of superheated gas being spewed out of each end of the galaxy create a "low pressure" in the center of the galaxy which could reach far beyond the normal reach of gravity? This would require thinking of space time as a viscous fluid that is warped by matter,but would preclude the need for dark matter.